This gun was built by a fellow named Hunkeler. Other than that, I know little about the gun, other that what it likes.
I do not know the make of the barrel, either. It has a modern choke, between IMP Cylinder & modified.
As a 1/2 stock, this gun fits very well and swings quickly. It has excellent ergonomics. No need to look at the bead, just
the bird, cover it, just past/BOOM! dead bird.